The standard ISO 10605 specifies a selective testing method (also adopted by some vehicle manufacturers): field coupling method, utilizing a metallic coupling plate and a discharge island to apply an electrostatic field.

The two images below show the standard test fixture dimensions, with the red area designated for the EUT. The standard only specifies the dimensions. Due to the small size, most EUTs exceed this dimension. Therefore, we have improved our product, achieving dimensions of 700*500mm.